A line of thunderstorms quickly moved across northern Illinois during the afternoon of June 4th.  This line of thunderstorms produce damaging winds and blew down trees and tree limbs across many areas.  Several airports measured gusts just below severe criteria.  Aurora measured a gust to 56 mph at 1214 pm CST and Midway measured a gust to 54 mph at 1316 pm CST.  As these thunderstorms moved east over Lake Michigan by mid afternoon, an outflow boundary from these thunderstorms became stationary across southern Will and southern Cook counties.  Thunderstorms redeveloped along this outflow boundary during the late afternoon and early evening hours.  These storms produced torrential rains which caused flooding as well as some wind damage.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 04-JUN-05 12:45:00 to 04-JUN-05 12:50:00 (CST)
Location: CRYSTAL LAKE
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Several small tree limbs were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 04-JUN-05 13:45:00 to 04-JUN-05 13:45:00 (CST)
Location: OAK LAWN
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Blowing wood planks from a building under construction in the 5200 block of west 95th street caused damage and broken windows to garages in the area.  Tree limbs were also blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 04-JUN-05 13:35:00 to 04-JUN-05 13:35:00 (CST)
Location: EVANSTON
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

A large tree was blown down near Keeney and Sheridan Roads.

Thunderstorm Wind in COOK, ILLINOIS
From 04-JUN-05 13:53:00 to 04-JUN-05 13:53:00 (CST)
Location: EVANSTON
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

A large tree fell and blocked part of South Boulevard.

Thunderstorm Wind in COOK, ILLINOIS
From 04-JUN-05 13:53:00 to 04-JUN-05 13:53:00 (CST)
Location: DES PLAINES
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Trees were blown down at River and Golf Roads.

Hail in KENDALL, ILLINOIS
From 04-JUN-05 12:10:00 to 04-JUN-05 12:14:00 (CST)
Location: PLANO
Magnitude: 0.88 
Reported by: AMATEUR RADIO

Thunderstorm Wind in DE KALB, ILLINOIS
From 04-JUN-05 12:20:00 to 04-JUN-05 12:23:00 (CST)
Location: DE KALB
Magnitude: 55 EG
Reported by: TRAINED SPOTTER

Trees, large tree limbs and power lines were blown down.  Two grain bins were blown over.  A gas pump at a gas station was blown over, damaging a car.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 04-JUN-05 12:35:00 to 04-JUN-05 12:35:00 (CST)
Location: BARTLETT
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Several tree limbs were blown down along with several screens blown out of windows.  A small canvas shelter was blown down on a patio.

Thunderstorm Wind in WILL, ILLINOIS
From 04-JUN-05 16:00:00 to 04-JUN-05 16:05:00 (CST)
Location: BEECHER
Magnitude: 60 EG
Reported by: TRAINED SPOTTER

Numerous trees were blown down in the Racoon Grove Forest Preserve.  At the Pheasant Lake Estates, a 6 inch tree was uprooted, a trailer was damaged, a shed was moved and leveled and a car port was blown down.

Thunderstorm Wind in WILL, ILLINOIS
From 04-JUN-05 16:23:00 to 04-JUN-05 16:25:00 (CST)
Location: MONEE
Magnitude: 52 MG
Reported by: AMATEUR RADIO

A metal storage shed was damaged three miles southeast of Monee and a gust to 60 mph was recorded in Crete.

Flash Flood in WILL, ILLINOIS
From 04-JUN-05 16:20:00 to 04-JUN-05 18:20:00 (CST)
Location: EAST PORTION
Reported by: TRAINED SPOTTER

Several roads were flooded in Crete and Beecher.  In Crete in Will County, 3.75 inches of rain was reported and in Park Forest in Cook County, 1.90 inches was reported.

Thunderstorm Wind in KANE, ILLINOIS
From 04-JUN-05 12:20:00 to 04-JUN-05 12:30:00 (CST)
Location: COUNTYWIDE
Magnitude: 55 EG
Reported by: EMERGENCY MANAGER

Tree limbs and power lines were blown down countywide.

Thunderstorm Wind in LAKE, ILLINOIS
From 04-JUN-05 13:30:00 to 04-JUN-05 13:30:00 (CST)
Location: ROUND LAKE PARK
Magnitude: 55 EG
Reported by: EMERGENCY MANAGER

A tree was uprooted.

Hail in COOK, ILLINOIS
From 04-JUN-05 19:22:00 to 04-JUN-05 19:25:00 (CST)
Location: CICERO
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in LA SALLE, ILLINOIS
From 04-JUN-05 11:51:00 to 04-JUN-05 11:51:00 (CST)
Location: GRAND RIDGE
Magnitude: 55 EG
Reported by: EMERGENCY MANAGER

A chimney and siding were blown off a house.  Utility poles were also blown down.  Witnesses reported a possible gustnado with this line of thunderstorms.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 04-JUN-05 11:30:00 to 04-JUN-05 11:30:00 (CST)
Location: TONICA
Magnitude: 50 EG
Reported by: NEWSPAPER

A large barn built in 1946, was blown down.

Hail in WILL, ILLINOIS
From 04-JUN-05 16:00:00 to 04-JUN-05 16:03:00 (CST)
Location: CRETE
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny size hail was reported near Monee and Western Roads.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 04-JUN-05 11:40:00 to 04-JUN-05 11:40:00 (CST)
Location: LOSTANT
Magnitude: 55 EG
Reported by: TRAINED SPOTTER

A semi truck was blown over on Interstate 39.

Thunderstorm Wind in GRUNDY, ILLINOIS
From 04-JUN-05 12:35:00 to 04-JUN-05 12:35:00 (CST)
Location: MORRIS
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

A tree was blown down on Gun Club Road.

Thunderstorm Wind in WILL, ILLINOIS
From 04-JUN-05 12:40:00 to 04-JUN-05 12:40:00 (CST)
Location: JOLIET
Magnitude: 50 EG
Reported by: NEWSPAPER

A four inch diameter tree limb was blown down on Wake Island Drive.  Manhattan Road was blocked after a tree was blown over.

Thunderstorm Wind in COOK, ILLINOIS
From 04-JUN-05 13:20:00 to 04-JUN-05 13:20:00 (CST)
Location: ARLINGTON HGTS
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Tree limbs were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 04-JUN-05 13:30:00 to 04-JUN-05 13:30:00 (CST)
Location: CHICAGO
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Trees were blown on to buildings in the 4700 block of Fransisco and the 1400 block of North Kostner.